In a world filled with superpowered Quirk users, college student Kouichi Haimawari's dream is to become a hero just like the ones he so admires. Unfortunately for him, he finds out that there is only so much he can do with a sliding ability that gives him about as much speed as a bicycle. Thus, he is drawn to extra-legal, simpler work and takes on various local tasks beyond the grasp of the police and licensed heroes. However, a chance encounter with two misfits, a brash brawler vigilante who goes by Knuckleduster and the online sensation Pop☆Step, gives Kouichi the opportunity he's always dreamed about. With a dangerous new Quirk-enhancing drug turning ordinary people into instant villains, Kouichi finds himself accompanying the two in a quest to stop the drug from spreading. As the trio tries to get to the bottom of the case, the chaotic team looks to put a stop to wrongdoers that go overlooked by the law.

The second season of White Album, also known as episodes 14-26.

In a world overtaken by war and conflict, Hypnosis Microphones—devices through which a user channels lyrics that can affect the listener's brain and even cause physical damage—were introduced to the masses by the Party of Words. Revolutionizing warfare, Hypnosis Mics have transformed words and music into the sole weapons used by gangsters, terrorists, and the military, with physical weapons having been banned from use. As a result of swooping in during the chaos, the all-female Party of Words rules over the Japanese government. Women in Japan now live in Chuuouku, while men battle over surrounding territories outside the ward through rap battles. With intentions unknown, the Party of Words begins to gather the former members of the now-disbanded legendary rap crew The Dirty Dawg to fight not for territory or war, but for their respective crew's pride and honor in the greatest rap battle of all time. The first Division Rap Battle is about to commence, and practice is not something these rappers are going to need.

In August of 1995, Mikiya Kokutou meets a young kimono-clad woman named Shiki Ryougi. When he finds out that they go to the same school, he attempts to befriend her. Though her upbringing is unconventional and she herself is strange, Mikiya is not deterred, and Shiki gradually opens up to him. But Mikiya's life will be changed forever by this simple meeting, and in ways that he never imagined, as he begins to see a deadly side to his new friend...